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It was found that in a sample of 90 teenage boys, 70% of them have received speeding tickets. What is the 90% confidence interval of the true proportion of teenage boys who have received speeding tickets?
What is the probability for the following values of Z
suppose the average family of 4 washes 2000 lbs of laundry each year. assume the variable is normally distributed with
A population with u=73 and o=9 is transformed into a new population with u=10 and o=2. What is the new value for each of the following scores in the population?
at a local panda express you can choose one base item from four possibilities rice fried rice vegetable noodles and
according to the chronicle of higher education 69 of mba graduates in 2007-8 had some student loan debt when they
The data below are the numbers of hours of homework done as reported by 24 high school juniors for the last week in September 2006.
The issue of how much should be spent to solve particular U.S. social problems is a complex matter, and people have diverse and conflicting ideas on these issues.
suppose test scores for a test are uniformly distributed between 51 and 95. let xtest scores. what is the probability a
They tested a random sample of 40 batteries using a special device designed to imitate real-world use and recorded data on battery lifetime. Determine the sample mean (in minutes).
What is the standard deviation of the sampling distribution of the sample mean x if a sample of 64 students is selected at random from the entire freshman class?
Evaluate probability values using normal distribution and How many students earned more than $36,000? _______
Suppose that 25 people are called in for jury duty, two of whom are Native American. If 12 of the 25 people are randomly selected to the jury. What is the probability that no Native Americans are selected to the jury?
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